499539683520 has 448 divisors, whose sum is σ = 1822906874880. Its totient is φ = 128690380800.

The previous prime is 499539683399. The next prime is 499539683521. The reversal of 499539683520 is 25386935994.

499539683520 is a `hidden beast` number, since 4 + 9 + 9 + 539 + 68 + 35 + 2 + 0 = 666.

It is a super-2 number, since 2×499539683520² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (499539683521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 36479875 + ... + 36493565.

It is an arithmetic number, because the mean of its divisors is an integer number (4068988560).

Almost surely, 2^499539683520 is an apocalyptic number.

499539683520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 499539683520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (911453437440).

499539683520 is an abundant number, since it is smaller than the sum of its proper divisors (1323367191360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

499539683520 is a wasteful number, since it uses less digits than its factorization.

499539683520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13861 (or 13845 counting only the distinct ones).

The product of its (nonzero) digits is 62985600, while the sum is 63.

The spelling of 499539683520 in words is "four hundred ninety-nine billion, five hundred thirty-nine million, six hundred eighty-three thousand, five hundred twenty".